Magnetism in FeCl2 at high pressures

被引：8

作者：

Xu, WM ^{[1
]}

Pasternak, MP ^{[1
]}

机构：

[1] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

来源：

HYPERFINE INTERACTIONS | 2002年 / 144卷 / 01期

关键词：

high-pressure; Mossbauer spectroscopy; ferrous halide; magnetism; spin crossover; Mott transition;

D O I：

10.1023/A:1025486629107

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Anhydrous FeCl2 has been studied by Fe-57 Mossbauer effect up to 61 GPa and at 5 < T < 300 K using diamond- anvil-cells. In the 3.5 - 31 GPa range an average hyperfine field of similar to 1.2 T is observed, attributed to mutual cancellation of Fermi-contact and orbital terms. At P greater than or equal to 34 GPa the orbital term is abruptly quenched resulting in enhanced hyperfine field. At P > 42 GPa the onset of a diamagnetic phase is observed, signifying a total collapse of magnetism at P > 61 GPa.

引用

页码：175 / 181

页数：7

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